Navegando por Autor "Almeida, Chrystian Iezid Maia"

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Diversity of Hemiptera (Arthropoda: Insecta) and their natural enemies on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees in the Brazilian Cerrado
(Florida Entomologist, 2016) Leite, Germano Leão Demolin; Veloso, Ronnie Von dos Santos; Zanuncio, José Cola; Alonso, Jatnel; Ferreira, Paulo Sérgio Fiuza; Almeida, Chrystian Iezid Maia; Fernandes, Geraldo Wilson; Serrão, José Eduardo
The Cerrado occupies about 23% of the Brazilian territory and is characterized by great diversity of plants and insects and a great degree of endemism, and Caryocar brasiliense A. St.-Hil. (Malpighiales: Caryocaraceae) is widely distributed in this region. The diversity and abundance of hemipterans and their natural enemies were studied on trees of C. brasiliense in the Cerrado, pasture, and anthropic area in Montes Claros, Minas Gerais State, Brazil. We observed 1 rare, 8 common, and 1 frequent species of sucking insects; and 2 rare, 7 common, and 6 frequent species of natural enemies. Sucking insects and their natural enemies were most abundant in the pasture and least abundant in the Cerrado. Increasing diversity indices and numbers of species and individuals of sucking insects were followed by similar trends in the populations of natural enemies. Increasing populations of sucking insects led to greater numbers of individuals of ants, green lacewings, predator thrips, and ladybeetles. Aluminum level positively affected the number of species and individuals, and the pH of the soil reduced those of sucking insects. Leafhoppers had greater numbers on plants on soils with low pH values and high aluminum levels, but the opposite was noted for the aphids.
Seasonal abundance of galling Insects (Hymenoptera) on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees in the cerrado
(Florida Entomologist, 2013-09) Veloso, Ronnie Von Dos Santos; Leite, Germano Leão Demolin; Zanuncio, José Cola; Fernandes, Geraldo Wilson; Almeida, Chrystian Iezid Maia; Pereira, José Milton Milagres; Serrão, José Eduardo; Soares, Marcus Alvarenga
Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees have a wide distribution in the Cerrado, a tropical Brazilian savanna, with high diversity and endemism. This plant is protected by federal laws and is untouched in deforested areas of the Cerrado. This situation increases the damage to leaves from galling insects (Hymenoptera). We studied populations of galling insects and their natural enemies on C. brasiliense trees for 3 successive yr during each season in the Cerrado. A globoid gall-inducing Eurytoma sp. (Hymenoptera: Eury- tomidae) and its parasitoid Sycophila sp. (Hymenoptera: Eurytomidae) adults and predator Zelus armillatus (Lepeletier and Serville) (Hemiptera: Reduviidae) on the leaves were most abundant in the winter. The numbers of vein galls correlated negatively with the numbers of discoid and spherical galls, and the numbers of spherical galls correlated negatively with the numbers of discoid galls on C. brasiliense leaflets. Increased percentages of defoliation were correlated with reductions in the percentages of leaflets with total galls and leaflet area with total galls. Increased numbers of Sycophila sp. and decreased numbers of Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) were correlated with reduction in the numbers of Eurytoma sp. Numbers of Quadrastichus sp. (Hymenoptera: Eulophidae) and A. magistretti correlated negatively with the numbers of Sycophila sp. Increased numbers of Z. armillatus were correlated with reduction in the numbers of Eurytoma sp. and its galls and parasitoids. We concluded that this differential temporal distribution of galling insects and their natural enemies was influenced by plant phenology and time of colonization on C. brasiliense leaves.
Seasonal abundance of hemipterans on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees in the cerrado
(Florida Entomologist, 2012-12) Leite, Germano Leão Demolin; Zanuncio, José Cola; Fernandes, Geraldo Wilson; Almeida, Chrystian Iezid Maia; Ferreira, Paulo Sérgio Fiúza; Alonso, Jatnel; Serrão, José Eduardo; Veloso, Ronnie Von dos Santos
Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees have a wide distribution in the cerrado. This plant is protected by federal laws and is untouched in deforested areas of the cerrado. Under these circumstances, the damage to leaves, flowers, and fruits from sucking hemipterans has increased. We studied populations of sucking insects and their predators on C. brasiliense trees in the cerrado during each season for 3 successive years. The numbers of sucking insect individuals on C. brasiliense trees were similar among the seasons of the year. However, the highest number of species and greatest diversity occurred in winter. Predators were most abundant in spring and winter, with highest diversity and number of species in winter. We observed 7 rare, 2 common, and 1 constant species of sucking insects; and 4 rare, 8 common, and 1 constant species of predators on C. brasiliense trees. The greatest numbers of various sucking insect species were observed by seasons as follows: Aconophora sp. (Membracidae) on fruits and Frequenamia sp. (Cicadellidae) on leaves in the winter; Aphis gossypii (Glover) (Aphididae) and Mahanarva sp. (Cercopidae) in the spring; and Dikrella sp. (Hemiptera: Cicadellidae) on the leaves in the summer and autumn. For predators, Crematogaster sp. (Hymenoptera: Formicidae) had the lowest abundance on the leaves in the summer, and highest abundance in the flowers in the winter and spring, while in spring it was most abundant on the fruits, and in the autumn Trybonia sp. (Thysanoptera: Phlaeothripidae) on the leaves was the most abundant. Higher number of ants Crematogaster sp. was observed in Caryocar brasiliense trees that presented large numbers of Dikrella sp.. Higher numbers of predators Trybonia sp., Chrysoperla sp. (Neuroptera: Chrysopidae), and total of predator thrips were associated with decreasing numbers of Dikrella sp., A. gossypii, and total of sucking insects respectively. The increase in the numbers of individuals and species of predators were correlated with the reduction of these same ecological parameters of the sucking insects. We argue that this differential temporal distribution of sucking insects and their predators was influenced for phenology of plant and weather.
Seasonal damage caused by herbivorous insects on Caryocar brasiliense (Caryocaraceae) trees in the Brazilian savanna
(Revista Colombiana de Entomología, 2018-01) Veloso, Ronnie Von Dos Santos; Zanuncio, José Cola; Ferreira, Paulo Sergio Fiúza; Serrão, José Eduardo; Ramalho, Francisco de Souza; Almeida, Chrystian Iezid Maia; Leite, Germano Leão Demolin
Caryocar brasiliense (Caryocaraceae) trees have a wide distribution in the Brazilian savanna. This plant is protected by federal laws and is untouched in deforested areas of the Brazilian savanna. This situation increases the damage to leaves, flowers, and fruits from chewing insects. We studied populations of herbivorous Lepidoptera, Coleoptera, and Hymenoptera and their natural enemies on C. brasiliense trees for three successive years during each season in the Brazilian savanna. Phytophagous insects were most abundant at the beginning of winter and with more species and diversity in the summer. Natural enemies were most abundant in the spring and in the winter and with highest species and diversity at end of the winter. Fruits bored by Carmenta sp. (Lepidoptera: Sesiidae) and Naupactus sp.3 (Coleoptera: Curculionidae) on the leaves were highest in the summer. Fruits scraped by Naupactus sp.l and sp.2 were more numerous in the spring and summer, percentage of defoliation in the autumn. Apoptus sp. (Coleoptera: Elateridae) on the leaves in the spring, and leaf miners (Lepidoptera) in the winter. In the case of natural enemies, Crematogaster sp. (Hymenoptera: Formicidae) were most abundant on the leaves and in the flowers in the winter and spring, and on the fruits in the spring when new leaves and flowers are formed. The number of Zelus armillatus (Hemiptera: Reduviidae), Holopothrips sp. (Thysanoptera: Phlaeothripidae), and the complex of spiders were greater on the leaves in the winter; and Trybonia sp. (Thysanoptera: Phlaeothripidae) was most abundant on the leaves in the autumn